Abstract

Introduction: With the increase of lithium battery devices, including electronic cigarettes and battery power banks, there has been a steady rise in burn injuries secondary to device malfunction. These devices may cause chemical or flame burns. Our aim was to identify and classify epidemiological trends of explosions from lithium battery devices across the state of New South Wales (NSW), Australia. Methods: A review of the NSW Burn Injury Service (SBIS) database from January 2005–December2019, together with medical records from the burns units at the Children’s Hospital at Westmead (CHW), the Concord Repatriation General Hospital (CRGH) and the Royal North Shore Hospital (RNSH) was conducted. All patients who suffered a burn secondary from a lithium battery device were included and data was extracted on mechanism of injury, severity of injury and management. This study was approved by the ethics committees of CHW, RNSH and CRGH [2020/PID00179]. Results: Of the 24 patients identified, six were paediatric and 18 were adults. The majority were male (7:1) with a mean age of 29.0 (+/- 16.6 years). The mean total body surface area burnt was 2.5% (+/- 0.9) [range 0.1–21.0%]. The majority occurred after 2014 and involved spontaneous explosions. Their injuries ranged from partial to full thickness burns with flame being the most common type (n=15). Three quarters of the cases (n=18) occurred in a home setting. Conclusions: Lithium battery device explosions can result in a mix of burn depth injuries from flame, contact and electrical, or chemical burns. Consumers need to be made more aware of the potential risks associated with use of lithium battery powered devices.

Highlights

  • With the increase of lithium battery devices, including electronic cigarettes and battery power banks, there has been a steady rise in burn injuries secondary to device malfunction

  • This study was approved by the ethics committees of Children’s Hospital at Westmead (CHW), Royal North Shore Hospital (RNSH) and Concord Repatriation General Hospital (CRGH) [2020/PID00179]

  • Lithium battery device explosions can result in a mix of burn depth injuries from flame, contact and electrical, or chemical burns

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Summary

Introduction

With the increase of lithium battery devices, including electronic cigarettes and battery power banks, there has been a steady rise in burn injuries secondary to device malfunction. These devices may cause chemical or flame burns. Short circuiting is a common concern among many batteries that can lead to dramatic changes in the electrochemical structure of the battery resulting in local heat generation and transfer.[4] This ‘thermal runaway’ phenomenon is an exothermic event that leads to elevated temperatures up to 80 °C which cracks the electrode material and surrounding structures impeding detection of temperature differences and leading to risk of fire and explosion.[5,6] There are safety measures in place for some devices such as pressure burst discs, shutdown separators, and one-shot fuses.[7]

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